Re: [myhdl-list] "Error in user defined VHDL code" should show line, and column for error, rather than "index"

[Jan D. <ja...@ja...>]

Angel Ezquerra wrote:
> Hi,
> 
> I am trying to create a MyHDL wrapper for some of the most common xilinx FPGA
> constructs (such as PLLs and DSP48 blocks). In order to do so I'm following the
> example that can be found at:
> 
> http://www.myhdl.org/doc/0.6/manual/conversion_examples.html#conv-usage-custom
> 
> While doing so, I've found some problems. These are certainly in my own code.
> However I've noticed that the error message could be improved a bit. The current
> message is not very informative in the sense that it tells you that there is a
> problem at a certain "index". I assume that the index is an offset from the
> beginning of the __vhdl__ string that contains the user defined code.
> 
> Instead, it would be much better if it could tell you the line that contains the
> error and also the column offset in that line (if possible).
> 
> This would make it much easier to spot where the error is, specially when the
> __vhdl__ string is very long (as in this case).

Error messages are often a weak point, but I thought that in the particular
case of user-defined code, it was reasonable. I don't immediately understand
what you describe here, a small example welcome.

> Also (and I don't know if this may be possible at all), it would be nice if the
> error message told you the line in which the __vhdl__ string was declared.

Probably not trivial.

> On a related note, I get the following warning while trying to do the conversion
> of this user-defined block:
> 
> "c:\Python26\lib\site-packages\myhdl\conversion\_toVHDL.py:232: DeprecationWarnin
> g: functions overriding warnings.showwarning() must support the 'line' argument
>   category=ToVHDLWarning"
> 
> PErhaps this is a Python 2.6 vs 2.5 issue?

Probably.



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Jan Decaluwe - Resources bvba - http://www.jandecaluwe.com
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